Blue-flame wick oil-burner.



R. HOFFMAN.

BLUE FLAME WICK OIL BURNER.

APPLICATION FILED MAR. 3l, 1915.

Patented May 23,1916.

as Anrlorrron.

RUDOLPH HOFFMAN, or CHICAGO HEIGHTS, ILLINOIS, AssIeNon To SEARS, nonsticky AND COMPANY, OF CHICAGO, ILLINOIS,V A CORPORATION OF NEW YORK.'

Specification of Letters Patent.

application filed March 31, 1915. y Serial No. 18,210. Y

To all whom t may concern:

Be it known that I, RUDOLPH HOFFMAN, a citizen of the United States, residing at Chicago Heights, in the county of Cook and State of Illinois, have invented certain new kand useful Improvements in Blue-Flame Wick Oil-Burners, of which the following is a specification.k

Y In blue-name wick oil burners, the annular wick is vertically movable within an annular casing formed of an inner and an outer wick tube. As the power for raising and lowering the wick is applied at one point only, there is a tendency for the wick to tiltand bind and thus either` to become locked in its annular casing or to rise unevenly. This tendency is especially apt to manifest itself when the interior diameter of the wick is somewhat greater than normal.

The object of this invention is to provide simple and effective means for obviating this difficulty.

In the accompanying drawings, Figure 1 is a vertical central sectional view through the annular wick casing land the wick, the wick-raising means also being illustrated. Fig. 2 is a fragmental sectional view upon an enlarged scale.

The inner wick tube 1 and the outer wick tube 2 are secured together at their lower ends and form an annular casing 3. The lower end of the casing 3 communicates in any suitable or well-known way with an oil supply pipe. The upper end of the outer wick tube is slightly contracted, and the upper end of the inner wick tube is slightly ared, so that said tubes shall properlyV conform to the wick.

The wick 4 is secured to a wick carrier 5` form the roll 6; the upper end ofthe wick carrier 1s annularly indented, thus forming an inwardly extending'rib 7 and a plunger Y Patented May 23, 1916.r

of the same diameter as the interior diamev ter of the roll 6 is forced into the wick, thus bringing the inside diameter of the wickl in the region ofthe rib 7 to the same dimension as thejinside diameter of the roll 6. The diameter ofsaid plunger is the same as the outside diameter of the flared upper end of the inner wick tube.

The wick carrier 5 has a pluralityfof perforations 8 adapted to receive the teeth of two spur wheels 9, said spur wheels being fixed to a shaft 10 which is provided with a hand-wheel 11. By turning the hand-wheel l1 the wick carrier and .the wick Vmay be raised and lowered in the'casing 3. v

The roll 6 and the portion of the wick which is pressed inwardly by the rib` 7 provide bearing portions above and below the terior diameter of said bearing portions'be- Y ing equal, the wick is prevented from tilting. Y Y

I claim -as my invention:

1. In combination, an inner and an outer wick tube, a wick and a wick carrier in the space between said tubes, and a wick raiser arranged to engage the wick carrier, the lower portion of said wick carrier belowthe wick raiser being inwardly folded to form Va portion lying at the inner side of the wick and adapted to bear against the inner wick tube, theupper portions ofsaid wick and wick carrier above the wick raiser being shaped to form an inwardly extending porticon adapted to bear against the inner wick tu e.

2. In combination, an inner and an outer wick tube, a wick and a wick carrier in the space between saidvtubes, and a wick raiser, the lower portionof said wick carrier being inwardly folded to form a portion adapted to bear against the inner wick tube, the upper portion of said wick carrier being annularly indented so as to decrease the inte- 70 wick-raiser wheels 9, said bearing portions rior diameter of the Wick in the region of In testimony whereof, I hereunto set myV the ndenzation to'tne simi; dimension as the hand in the presence of tWo Witnesses.

interior ameter o t e. olded ortion of e the'earrier, the Wick carrier beingy provided Y RUDOLPH HOFFMAN' 5 betweenV said folded portion and indented In the Vpresence 01?-,-

portion With perforations for engagement H. A. BARSCHOW,`

by the Wick raiser. BERTHA kAVRKImBKERG.

Copies offthis ptent may beobtained fr've centsr each, by addressing the Commissioner of Patents,

- Washington; n. c.n 

